142 SYNGBNESIA, SUPERTXUA. 



A genus of 18 species, almost peculiar to the Cape of 

 Good Hope and the Levant, with 1 species in Siberia, and 

 another indigenous to Europe. 



553. ARTEMISIA. L, (Wormwood, Southern- 

 wood, &c.) 



Calix imbricated, scales rounded, connivent. 

 Bays of the corolla none. Receptacle subvilious, 

 or nearly naked. Pap-pus none. 



Shrubby or herbaceous; leaves mostly multifid, flowers 

 often racemose. 



§ I. Leaves simple. 

 Species. 1. A. *longifQlia. Stem simple and herbaceous; 

 leaves mostly entire, linear-lanceolate, acuminate, margin 

 reflected, under side white and tomentose; flowers cyiin- 

 dric-ovate, erect, racemose and somewhat conglomerate, 

 sessile. Hab. In rocky situations, on the banks of the 

 Missouri, from the confluence of White River to the 

 Mountains? Obs. Very odorous. Stems several, simple, 

 rarely suflruticose; leaves very long, and almost linear, 

 pubescent on both sides, but beneath tomentose; flowers 

 small; receptacle naked. 



2. * terrata. Stem tall and herbaceous; leaves lanceo- 

 late, acuminate at either extremity, margin serrate, up- 

 per side smooth, under tomentose and white, flowers pa- 

 niculate, partly glomerate, erect; calix small, cylindric- 

 ovate, and nearly smooth. Hab. Near the Prairie du 

 Chien, on the banks of the Missisippi, also on the banks 

 of the Missouri, in open alluvial soils. Stem 5 or 6 feet 

 high; flowers very small. Leaves 6 to 8 inches long, and 

 an inch wide, shai'ply but not very regularly serrate. 



3. * colwnbiensis. Shrubby and canescent; leaves linear- 

 lanceolate, acute and flat, on either side equally canes- 

 cent, all of them very entire; flowers oblong, glomerate, 

 sessile and axillary, all hermaphrodite. — Hab. On the 

 arid and saline hills which border the Missouri and the 

 lesser streams, commencing about 30 miles below White 

 River; and continuing to the Mountains (or Northern 

 Andes), it occurs still more abundantly on the barren plains 

 of the Columbia river; in these regions, I am credibly in- 

 formed, that it furnishes the savages with the sole arti- 

 cle of fuel or of shelter, which they meet with in wander- 

 ing over these woodless deserts. It is the plant which was 

 known to the party of Lewis and Clarke by the name of 

 ** Wild Sage," and appears to be A. cana. of Pursh. Fl. Am. 

 2. p. 521. Obs. Stem 6 to 8 or 12 feet high, much brancii- 



